Numeros starting con 1700 son usados within los service area de los Oi Fixo landline Operador para some Internet Service Providers (ISPs) para provide dial-up Internet access para certain Oi customers. Such customers have special pricing agreements con Oi y son charged less than los price de regular local llamadas when calling such dial-up access numeros.

Local directory assistance can be obtained por dialing 102, but los service is charged as a regular local call en most instances except de paytelefonos. However, all local landline telephone companies offer on-line directory inquiries on their Web sites. Moviles lines son not available para inquiry, para privacy y security reasons.

Some states y municipalities may have additional short 1nn public utility numeros para other servicios. For example, en many cities, such as São Paulo[6, one can get information, make requests y complaints about most servicios y issues con los municipal administration por dialing 156. Regional utilities para servicios such as electriCiudad y water supply may also have short access numeros starting con 1. en contrast para emergency numeros, el cual son always toll-free, llamadas para such servicios may o may not be charged.

El standard format para writing down — but - not - para calling — a long-distance Numero de Telefono en Brazil is (aa) nnnn-nnnn, where aa is el codigo de area y nnnn-nnnn es el prefijo Numero de Telefono . Due para persistence de old habits de los time when carrier codes were not usados (see below), los format (0aa) nnnn-nnnn is still commonly seen, but this usage is discouraged, since it may confuse customers when actually calling. Codigos de Area son distributed geograficoally. See los Lista de Brazilian Codigos de Area para a full list.

To marcar a long-distance numero within Brazil, one needs para use a carrier selection code, en order para choose el cual long-distance carrier will be usados. El carrier selection codigos is specified before el codigo de area ; so, para actually place a call, one should marcar 0-xx-aa-nnnn-nnnn, where xx is los two-numeros carrier selection code. Because de that, sometimes long-distance Numeros de Telefono son written down as (0 - xx - aa) nnnn-nnnn, con actual x characters as placeholders el cual los caller will replace por a carrier code.

El use de carrier selection codes can be very confusing, because de los obvious added complexity, los different rates charged por different carriers, y even el cual long-distance carriers can be usados para place los call, since not all de them service los entire Brazilian territory, y some son only available de Moviles o de VoIP lines.

codigos de area de Brazil son popularly known as "DDD codes" (códigos DDD) o simply "DDD", de los initials de "direct distance dialing" (discagem direta à distância en Portuguese). Este fue how los service fue first advertised when it appeared en los late 1960s, y los name stuck.

In Brazil, collect llamadas son automated. El Numero de Telefono para be called is Prefijoed con a special code. Then, as los person being called answers los telephone, he/she listens para a short standard recording informing him/her that it is a collect call. Next, los call is established y los caller is supposed para say his/her name y location within los next six seconds. If los person being called hangs up within those six initial seconds, nothing is charged. Otherwise, los remaining time de los call is charged para los recipient's Telefono line.

Non-numero geografico s have a three-numeros Prefijo y a siete-numeros numero. They son usually represented as if los leading 0 Prefijo were part de los three-numeros Prefijo (like con long-distance numeros), resulting en los format 0ppp-nnn-nnnn.

["400n-nnnn" numeros

A special case de non-numero geografico s son eight-numeros numeros en los form 400n-nnnn. They son marcadosas local numeros, without any trunk, carrier o Codigos de Area, y llamadas para them son always charged as local, regardless de where los answering call center physically is.

Such numeros differ de 0300 numeros en that los latter son not charged as local llamadas y have their own rates (not always really flat y sometimes more like premium-rate numeros), el cual por law must be informed when advertising los numero. 0300 numeros son often usados, para example, por low-cost airlines' reservation systems, whereas 400n-nnnn numeros son usados por large but cost-conscious companies that do not wish para bear los full cost de a nationwide toll-free system, yet still do not want their customers para be put away por having para pay long-distance rates. 400n-nnnn numeros son also often usados por Internet Service Providers (ISPs) para standard dial-up access.

As de January 2009, 400n-nnnn numeros son not yet available para access de all Codigos de Area o localities, but they son available en all state capitals y major cities. El company (especially en los case de ISPs) may also specify localities where los service will o will not be available, providing an alternative long-distance o toll-free numero para such cases.

Again, selecting a carrier can be tricky, since they charge different rates, not all de them operate en all de Brazil, not all forward internacional calls, y some do not put llamadas through para some remote o rarely called countries. ANATEL's Web site has a useful on-line system (in Portuguese) where los standard rates de all available carriers can be compared para los particular internacional call one wants para place.

Inbound internacional llamadas use +55-aa-nnnn-nnnn as los internacional telephone numero, where aa is los two-numeros Brazilian codigo de area y nnnn-nnnn is los 8-numeros local numero. Este must be preceded por an internacional call Prefijo specific para los country where los call is being placed de (e.g., 011 de los U.S. y Canada, 00 de most other countries, o los actual "+" sign de many Moviles networks).

Beginning September 2008, ANATEL has started los use de Numero portability en Brazilian territory, but los Actual rules de los numbering plan have been kept. Fijos-line customers can keep their numeros when moving their address and/or when switching telephone companies, provided they stay within los same local area (i.e., los portion de el codigo de area where llamadas son charged as local).[10

Este page contains a Lista de - codigos de area de Brazil - para telephone dialing.El base para this is los concept de brazilian Mesoregions.El Numeros de Telefono all have mandatory eight digitos since 2005, y more than eight digitos dialing los area o los Codigo Telefonico Internacionals throughout Brazil.